esckjc@sbcglobal.net

I have a leak I neeed to identify and figure out how to get to and repair. The leak is at the rear of the engine, top side, near the distributer. With the plenum on I really can't see where it is specifically. I can't find any info about this in the GM or Haynes shop manuals. Can anyone help?

DMITTZ

I would say it is most likely to be either the small coolant fitting that goes from the intake to the heater core hose, or it might be the gasket between the intake and the head at the back of the engine. Check the little fitting first its just beside the distributor on the passenger side by where the egr tube connects to the intake. Best of luck.

-DMITTZ

esckjc@sbcglobal.net

Reason for hope then that I may not have to take off the intake manifold! That would be a good start to the new year. Thanks, Eric

DMITTZ

Hope I turns out to be an easy fix and best of luck with it.

Also please note I edited my post just now because If its not that fitting that is leaking I meant to say then it may be the gasket between the intake and the head (not the block) at the back of the engine.

esckjc@sbcglobal.net

Understood. Do you think I'll be able to see that fitting without removing the plenum? Or, is that too much to hope for, although it doesn't look too tricky or time consuming. Thanks again.

DMITTZ

Yes, I think you can get to it without removing the removing the plenum. My guess is you will only have to remove the EGR tube and unplug the hose that connects that fitting to the heater hose to remove it. If that is what's leaking I should be an easy fix. When you remove it put some teflon tape or thread sealer on the threads and that should fix the problem. (if that fitting was causing the leak).

Best of luck.

mickey5

L98s are known for the coolant leak on left side rear between intake and head. I always had a little puddle in that back corner. Been that way for 25 years. Never amounted to much coolant loss. To me it wasn't worth effort, time or money to fix